Tourniquet.



H. w. PLUMMER.

TOURNIQUET.

APPLICATION FILED oc. s. IBII.

Patented Oct. 15

HIENKY W- uv/IMEK sraf'ins l rampant' ernten?.

HENRY W. PLUMMER, OIE' AUGUSTA, MAINE.

'roURNIeUEm To all whom z't may concern.'

` Be it known that I, HENRY W. PLUMMER, a citizen of the United States,'residing at Augusta, .in the county of Kennebec and State of Maine, have invented certain new and useful Improvements in Tourniquets, of which the following is a specication.

l This invention relates to certain improvements in tourniquet or hermostatic bandages, and is an improvement over what is disclosed in my Patent No. 1,218,313, dated March 6,1917, and it is an object of the invention to provide a novel and improved device of this general character which includes a flexible band or strip adapted to lbe drawn labout a limb together with a compression .member capable of quick adjustment against an artery so that the passage of blood through said artery is obstructed DI' retarded and wherein meansv are employedr'for' effectively holding the flexible band or strip in applied position about a limb.

It is also an object of the invention to provide a device of this general character including a compression member capable of 'direct endwise thrust in one direction and which is moved endwisein an opposite direction upon axial rotation, together with novel and improved means for effectively maintaining in operative position a member for controllingthe movements of the compression member.

The invention' consists in the kdetails of rconstruction and in the combination and arrangement of the several parts of my improved. tourniquet wherein certain 1mportant'advantages arey attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as willfbe hereinafter more Yfully set forth. i t The novel features ofk my 'invention will hereinafter be definitely claimed. 'In order' that my invention may be the better understood I' will now proceedto describe the same with reference to the accompanying drawings wherein:

' /Figure 1 is a view in elevation illustrat- Spercication of Letters Patent.

ing a tourniquet constructed in accordance with an embodiment-of myinvention;

Fig., 2Nis a fragmentary view partly in top plan and partly in section of the device as illustrated in Fig. 1

F ig. V3'is a fragmentary view partly in section and partly in elevation of the block ang compression member as herein included;

Fig. 4 isa sectional view taken substantially on the line 4-4 of Fig. 2. n

As disclosed in the accompanying drawings 1 denotes a block preferably rectangular in form and having the marginal portion of one face thereof defined by the flanges 2. One of the side flanges 2 is provided with a slot 3 resulting in a bar 4 to which an end portion of an 'elongated band Vor strip 5 is suitably secured. The band 5 is preferably formed of textile material possessing the requisite strength. The second sideiange 2 and the adjacent marginal portion of the block 1 is provided with the slot 6 inwardly inclined in cross section and through which the free end portionvof the band or strip 5 is Patented Oct. 15, 1918.,

Application mea october 6,1917. semi No. 195,031.

against retrograde movement and especially after saidband hasV been caused to properly embrace a limb. yThebar 10 is constantly urgedrtoward the adjacent side flange 2 through the medium ofthe springs 12. As

vherein embodied' each of. saidsprings has one end portionresting upon the side flange 2 and its opposite portion upon the intermediate arm 9 with the intermediate portion thereof coiled vas at 14 about a pin 8.

The face of thel block Y1 remote-from theA flanges 2 is provided with a circular recess 1 and in communication with the recess or pocket l5 and eccentric thereto is the opening 16 .and .which opening 16 is `provided withl a fsmooth bore Loosely 'disposed through theopening 16 is the endWise movable compression member C having in swivel connection With one endithereof asat 16 the knob or head 17 adapted to be pressed firmly against the flesh to close an artery when the device is in applied position up'onY Aav-limb.

- The intermediate portion ofthe compression member C is provided With the bevel if. threads 1,84 which permit the member C to split ring formed of resilient material and which spring co-acts with the peripheries of the' sections 19. One of the sections 19 is provided Vwith an opening 22 Which is adapted to register with a recess 23 formed in the bottom of the recess or pocket 15 and disposed through said opening 22 and extending Within the recess 23 is the pin 24 which serves to hold the locking member L against rotary movement. It is to be noted that the co-action between the .locking `member L and the vcompression member C is such as to permit movement of the head or knob 17 away from the limb only upon requisite aXial rotation being given to said :member C and for Which 'reason the outer end of said member C is provided With the operating member 25 herein disclosed as a circular hea-d havingits peripheryY serrated or knurled for obvious reasons. v

A material advantage is .pafforded yby the particular manner byrwhich the member C is operated as aquiek andV unobstructed end*- Wisemovement may be given'to'thek member to cause the same to impose the properpresysureupon an arteryy when the device is ap plied *to*V a limb and the member L holds the same'normally against retrograde movement.

--The outward'movement of Ythe member C as afforded by the axial rotation thereof assures a'gradual release of the pressure upon 'an artery 'so that VVin' the event an operation ist not rentirely successful the-pre'ssurejupon 'the artery -jean be quickly restored Without undue injurious effect upon the patient.

The outer or open face of the recess 15 is adapted to be closed by the removable plate 26 held in applied position by the screws 27 or other suitable means and it will Vbe understood that 'said' plate'is'provided with a suitable opening throughv Which the member@ is freely movable in either direction. I Yalsofindtit 'ofiadvantage to provide one end portion of the bar 10 with the outstanding finger piece 28 arranged on a predetermined incline relative to the bar 10.

kThis finger piece affords a convenient means Wherebyetheteeth 11 of the bar 10 may be readily disengaged from the band or strip 5.

It has also been found desirabletosecure tothe outer* or free endV portion of the fleXi ble band-or strip 5 the metallic plate'29'preff erably of steel.

y Freni the p thought to Ybe obvious that. a tourniquet con'- structed in accordance Withmy invention is particularly Well adapted fory use Aby freason of the convenience and'ffacilitywith which foregoing descriptiom yitis l it may be assembled andV operated and` will also be obvious thatl my invention is susceptible o f some changeand modification Without materially departing fromthe principles and spirit thereof and vfor this lreason I dOlOt Wish to'be understood as limiting Y myself to the precise arrangement and fdr'- consisting ofva' blockffa V carried by the block and co-acting .With the A.

compression vmember for retarding the movementV of said compressionmember in one direction, said block and last;named member being provided With co-acting means for holding saidlast named member against rotary movement about the compres"- sion member independently ofthe'block. 2.' A tourniquet 'Y consisting of a. blockila limb encircling compression band co-acting With the blockra" compression lmember fdisposed loosely throughk the,.block and pro `vided With beveledlthreads, alocking member carried by the block dand including -relaitively movable members normallyin engagement with 'said threads, and means'co-.acting With one of 'said sections andwith the block for holding the locking member against rotary movement about the compression member independentlyofthe block. Y A

3. A tourniquet-` consistinggof block-,1' a i limb encircling compression y bandy co-acting with the block, afcompression`member disposed loosely through the blockfandgprorlvided; with beyeled threads;` a(y locking,l mem- Y ber carried by the block and' icludngirlw tively movable members normally in engagement with said threads, onse of said relatively In testimony whereof I ailX my' signature movable members Of the locking member bein the presence of two Witnesses. ing provided with anl opening, said block being provided with a recess adapted to HENRY. W' PLUMMER' register with the opening of said member, Witnesses:

and a pin seated within said opening and ALFRED TOULOUSE,

recess. JOSEPH M. OADARETrE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

